Erosion corrosion detection in Beijing
Tianjin Rong Da Testing Co., Ltd. contact: Wang Jingfu
Cell phone: 13102238283 QQ:3144667033
Telephone: 022-23892103
The erosion corrosion not only includes the erosion of the metal by the fluid and solid particles, it is not only the protection layer and the body of the metal surface, but also the fresh metal exposed to the corrosive medium. Not a single type of Corrosion Erosion corrosion, and other corrosion which complement each other, can promote other corrosion.
Corrosion: material (usually metal) and the interaction between the physical and chemical environment, the result is that the change of material properties, and can often lead to material, environment or by them as a component part of the technology system function damage. According to this definition, the damage caused by the physical role of the material, but also a kind of corrosion.
Erosion corrosion is the metal damage caused by high speed relative motion between metal surface and corrosion fluid. Usually in a static or low-speed flow of corrosive medium, corrosion is not serious, and when the corrosive fluid in high-speed movement, destruction of the metal surface can provide the surface coating or corrosion film protection, surface film thinning or removing accelerated corrosion and erosion corrosion, erosion and corrosion is the synergistic effect of fluid the results of.
Only the physical role of erosion, can not be called corrosion. Corrosion must have been chemically changed. When erosion (actually wear) and corrosive medium exist at the same time, even if the corrosive corrosive medium is not too strong, corrosion is very serious, can cause local corrosion, erosion and corrosion which is the result of joint action, so called erosion
Simply put, scour is the physical process, the corrosion is generally considered a chemical process, so erosion corrosion is a chemical process fluid damage protective film on metal surface erosion physical process + corrosive medium react with the metal to metal corrosion by combining the results.
The characteristics of erosion corrosion of metal surface is obviously large hollow shape, medium fluid containing solid particles or suspended solids.
Simply put, scour is the physical process, the corrosion is generally considered a chemical process, so erosion corrosion is a chemical process of physical damage process of scour protection film on metal surface fluid and corrosive medium react with the metal to metal corrosion by combining the results